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PartsTable / COMPONENT / B1575-3/8-11
B1575-3/8-11 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The B1575-3/8-11 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-050-0458, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
B1575-3/8-11
NSN: 5310-00-050-0458
FSC: 5310
CAGE: 81312 — WINCHESTER INTERCONNECT CORPORATION DBA WINCHESTER INTERCONNECT DIV WINCHESTER INTERCONNECT (USA)
SPECIFICATIONS
Part NumberB1575-3/8-11
NSN5310-00-050-0458
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: B1575-3/8-11 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
NUT STYLE: HEXAGON
•
NUT HEIGHT: 0.375 INCHES NOMINAL IN
•
THREAD QUANTITY PER INCH: 32
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
NOMINAL THREAD SIZE: 0.138 INCHES IN
•
BEARING SURFACE TYPE: FLAT
•
THREAD DIRECTION: RIGHT-HAND
•
SURFACE TREATMENT: CADMIUM OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
NUT STYLEHEXAGON
NUT HEIGHT0.375 INCHES NOMINAL IN
THREAD QUANTITY PER INCH32
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
NOMINAL THREAD SIZE0.138 INCHES IN
BEARING SURFACE TYPEFLAT
THREAD DIRECTIONRIGHT-HAND
SURFACE TREATMENTCADMIUM OVERALL
MATERIALCOPPER ALLOY OVERALL
THREAD CLASS2B
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
7135276P1Interchangeable
interchangeable cross-reference
interchangeable
7135276P001Interchangeable
interchangeable cross-reference
interchangeable
E2361PC3321Interchangeable
interchangeable cross-reference
interchangeable
2321Interchangeable
interchangeable cross-reference
interchangeable
E1127PC3321Interchangeable
interchangeable cross-reference
interchangeable
373449-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B1575-3/8-11?
B1575-3/8-11 is a B1575-3/8-11.
What parts can replace B1575-3/8-11?
There are 16 known substitutes for B1575-3/8-11: 7135276P1, 7135276P001, E2361PC3321 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B1575-3/8-11?
B1575-3/8-11 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-050-0458. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026